Chaos Corona Forum

Chaos Corona for Cinema 4D => [C4D] General Discussion => Topic started by: Stefan-L on 2019-06-27, 15:42:54

Title: remove gamma 2.2 from vfb?
Post by: Stefan-L on 2019-06-27, 15:42:54

Hi

for some special tonemapping workflow i usually use, i needed to get rid if the gamma 2.2 in the vfb in c4d corona.

in vray this is easy in deactivating the "srgb" button in the vray vfb. is there a way to do similar in the corona frame buffer?

thx for help
Stefan

Title: Re: remove gamma 2.2 from vfb?
Post by: Stefan-L on 2019-07-24, 19:15:32

any news from this?

even a simple gamma setting like the c4d picture viewer has it would help already to remove the unwanted gamma(setting gamma to 0.4545 worst case).

we add custom curves instead of the default lwf, so needed a clean workflow without the baked in gama 2.2 applied.do i oversee anything or is this not yet possible in corona?

in vray this works well and easy... it prevents us to use corona yet in production

Title: Re: remove gamma 2.2 from vfb?
Post by: fabio81 on 2019-07-25, 08:50:39

Hi Stefan,

in the Corona you could use a LUT with negative range gamma. You could make it in photoshop

Title: Re: remove gamma 2.2 from vfb?
Post by: burnin on 2019-07-25, 12:42:30

Yes, you could. You can also simply bend the curve. ;)

But that's not the point.

For any tonemapper, simple gamma control is an essential part of the tool. Corona's VFB & CIE shouldn't be an exception.
Especially considering its philosophy: "Effortless simplicity."

:)

Title: Re: remove gamma 2.2 from vfb?
Post by: Nelaton on 2019-09-12, 11:30:53

I rebump this question. Is this something achievable soon?
We need the possibility to  adjust the gamma of a scene as max do it (slider with  scene gamma, to set it up to whatever value needed).

Regards,
Nelaton